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alistair23-linux/drivers/platform
Koba Ko 544a3a292d platform/x86: dell-laptop: don't register micmute LED if there is no token
[ Upstream commit 257e03a334 ]

On Dell G3-3590, error message is issued during boot up,
"platform::micmute: Setting an LED's brightness failed (-19)",
but there's no micmute led on the machine.

Get the related tokens of SMBIOS, GLOBAL_MIC_MUTE_DISABLE/ENABLE.
If one of two tokens doesn't exist,
don't call led_classdev_register() for platform::micmute.
After that, you wouldn't see the platform::micmute in /sys/class/leds/,
and the error message wouldn't see in dmesg.

Fixes: d00fa46e0a ("platform/x86: dell-laptop: Add micmute LED trigger support")
Signed-off-by: Koba Ko <koba.ko@canonical.com>
Reviewed-by: Mario Limonciello <Mario.limonciello@dell.com>
Reviewed-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-06-22 09:30:53 +02:00
..
chrome platform/chrome: cros_ec_rpmsg: Fix race with host event 2020-04-21 09:04:51 +02:00
goldfish treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
mellanox platform/mellanox: fix potential deadlock in the tmfifo driver 2020-01-17 19:48:42 +01:00
mips MIPS: Loongson: Fix return value of loongson_hwmon_init 2020-01-17 19:48:55 +01:00
olpc Platform: OLPC: add SPI MODULE_DEVICE_TABLE 2019-07-25 20:21:00 +03:00
x86 platform/x86: dell-laptop: don't register micmute LED if there is no token 2020-06-22 09:30:53 +02:00
Kconfig platform-drivers-x86 for v5.3-1 2019-07-14 16:51:47 -07:00
Makefile Platform: OLPC: Add XO-1.75 EC driver 2019-05-20 17:27:08 +03:00